Daikin VRV Inverter K Series - Outdoor Unit: Abnormal Discharge Pipe Temperature

SiE-05C Troubleshooting
Troubleshooting Inverter K Series 143
3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature
Remote Controller
Display
FF
FF
33
33
Supposed Causes  Abnormal discharge pipe temperature
 Defect of discharge pipe thermistor (5K: R3T 8K, 10K: R3-1T, R3-2T)
 Defect of outdoor unit PC board
 Discharge pipe thermistor wrong connection
 Liquid injection solenoid valve wrong connection
Troubleshooting
(VF044)
Discharge pipe
temperature is 135˚C
or higher.
8, 10K:
Is there a wrong
connection of the injection
solenoid valves Y3S and
Y4S?
8, 10K:
Is there a wrong
connection of the
discharge pipe thermistor?
R3-1T (inverter side)
X17A
R3-2T (standard
side) X18A
Are
the characteristics
of the discharge pipe
thermistor normal?
·5K: R3T
·8, 10K: R3-1T, R3-2T
(For the characteristics
table, refer
to P293.)
Replace outdoor unit PC board A1P.
Connect correctly and turn on again.
Replace the discharge pipe thermistor.
NO
NO
NO
NO
Out of gas, compression defect, etc.
Defect of the refrigerant system
YES
YES
YES
YES
SI-05C.BOOK Page 143 Monday, November 6, 2000 4:13 PM
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